Interface RequestCallback

public interface RequestCallback
The primary interface a caller must implement to receive a response to a Request.

Required Module

Modules that use this interface should inherit com.google.gwt.http.HTTP. 
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<module>
  <!-- other inherited modules, such as com.google.gwt.user.User -->
  <inherits name="com.google.gwt.http.HTTP"/>
  <!-- additional module settings -->
</module>

Methods

onError(Request, Throwable)Called when a Request does not complete normally.
onResponseReceived(Request, Response)Called when a pending Request completes normally.

Method Detail

onError

public void onError(Request request, Throwable exception)
Called when a Request does not complete normally. A RequestTimeoutException is one example of the type of error that a request may encounter.

Parameters

request
the request object which has experienced the error condition
exception
the error that was encountered

onResponseReceived

public void onResponseReceived(Request request, Response response)
Called when a pending Request completes normally. Note this method is called even when the status code of the HTTP response is not "OK", 200.

Parameters

request
the object that generated this event
response
an instance of the Response class